MCQOPTIONS
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| 1. |
Which of the following is true regarding gastrulation: |
| A. | Involves the hypoblastic cells of inner cell mass |
| B. | Usually occurs at 4 weeks |
| C. | Establishes all the three germ layers |
| D. | Occurs at the caudal end of the embryo prior to its cephalic end |
| Answer» D. Occurs at the caudal end of the embryo prior to its cephalic end | |